While trying to retrieve https://www.bricklink.com/v2/catalog/catalogitem_pgtab.page?idItem=None&idColor=0&gm=0&gc=1&ei=0&prec=4&showflag=0&showbulk=0 I got the error “SP Error while getting price guide : INVALID PARAMETER” which means “data type mismatch” because ‘None’ should be a number